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Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
4. TROUBLE SHOOTING
ͽͶ͑ͺΟΥΖΣΟΒΝ͑ΆΤΖ͑ΟΝΪ
^YVXZZ
4. TROUBLE SHOOTING
Figure 4.2 power block of LG-C300
CIRCUIT
Figure 4.2 Power block of LG-C300
C101
2.2u
1V8_VDD
1V8_VDD
VUSB
1V8_VDD
VBAT
75
FB101
R103
0
VCORE
1V8_VDD
VDDMS
1V8_VDD
VUSB
VDDTRX
1V8_VDD
1V8_VDD
VDDTDC
C106
0.1u
1V8_VDD
1V8_VDD
VDDRF2 VDDTDC
VMMC
470
R106
VCORE
Q101
1
2
3
VMMC
1V8_VDD
VRF1
C111
0.1u
VAUX
VAUX
0.1u
C113
1u
C114
VRF1VDDMS
100K
R107
3.3u
101L
VBAT
VDDXO
C115
2.2u470n
C117
VBAT_RF2
470n
C118
1V8_VDDVPMU
4.7nC119
VBAT
47n
C120
C121
470n
47n
C122
VPMU
VBAT
VBAT
VDDRF2
0.1u
C124
L4A14
K1A15
P2
N1R15
M2T15
N3M11
M1M10
L1N11
K2R11
K3T11
N12
6K
5T
6R
7M
4T
6M
6L
01L
51C
51F
01H
31G
9
M
7L
21F
8
P
21E
41G
61
R
21A
21
B
11E
31
H
21G
31A
01
J
31F
41F
51
P
41P
8G
8K
9
J
9H
8F
9T
01
P
5R
7
K
9G
8N
61
P
41L
7R
7T
6
T
7P
1
DS_DDV
BF_1DS
1DS_SSV
WS
_
1DS
SMSSV
PSTABV
U
MP
_
TABV
1OIDDV
2O
I
D
DV
UBE_DDV
UMPV
UMP_SSV
1EROC_SSV
2E
ROC_SSV
3ER
O
C
_SSV
EROCV
EROCDDV
P
C
8V1
D
DV
RSLSSV
XRTSSV
XRSSV
18V1DDV
PMARV
G
I
D_SSV
SMDDV
OXDDV
C
DT
D
DV
DMMDDV
GE
N
D
DV
TABV
OCDSSV
X
UAV
OXSSV
CMMV
BSUV
2
FRDDV
1FRV
OL_SSV
FRSSV
CTRV
NESNES
PESNES
GHCDDV
SC
BSC
GHCV
TNHSV
M0
M1 A_D0
M2 A_D1
VDD_FMR A_D2
FMRIN A_D3
FMRINX A_D4
CP1 A_D5
CP2 A_D6
A_D7
TX1 A_D8
FE2 A_D9
VBAT
C125
1u
C128
0.1u
VDDXO
C129
0.1u
220n
C130
VBAT_RF2 VRTC
R109
3.9K
220n
C131
5.6K
R110
18p
C132
C107
22u
C147
5p
C133 DNI
R111
0
4.7n
C123
211R
0
IND 531C
C134 10u
BS2
FM_ANT
LCD_ID
BAT_TEMP
GSM_OUT
TX_RAMP
LDO_OUT
AD09
AD08
AD07
AD06
AD05
AD04
AD03
AD02
AD01
AD00
ABB
(10V)
PIN_H10
Seperate and shield
Speaker Supply
(10V)
VDD_IO2
VBATSP
(1%)
PMU PADSRF SUPPLY DOMAIN
VDD1V8CP
VDD_IO1
PIN_H13PIN_B14
RF SUPPLIES (DIRTY GND)
PMU SUPPLIES
PIN K8PIN M9PIN L7PIN P8
RF SUPPLIES (CLEAN GND)
(10V)
VBAT_PMU
PIN P14
PIN P16
PIN P10
PIN R5PIN G9
PIN_B12PIN_E11PIN_G14PIN_G13
ABB SUPPLIES
DBB SUPPLIES
PIN K7
PIN N8
VDD_EBU
RF